Lucy Jones

U.S. Geological Survey seismologist Lucy Jones explains a demonstration of an earthquake early-warning system at Caltech. State Sen. Alex Padilla (D-Pacoima) introduced legislation on Monday to create a statewide system that would warn people seconds before the ground starts shaking.

U.S. Geological Survey seismologist Lucy Jones explains a demonstration of an earthquake early-warning system at Caltech. State Sen. Alex Padilla (D-Pacoima) introduced legislation on Monday to create a statewide system that would warn people seconds before the ground starts shaking. (Tim Berger / Staff Photographer)

U.S. Geological Survey seismologist Lucy Jones explains a demonstration of an earthquake early-warning system at Caltech. State Sen. Alex Padilla (D-Pacoima) introduced legislation on Monday to create a statewide system that would warn people seconds before the ground starts shaking.Tim Berger / Staff Photographer